/* forgia dev blog — design system tokens */
:root {
  --paper-50:  #FBF8F3;
  --paper-100: #F5F1E9;
  --paper-200: #ECE6DA;
  --paper-300: #DCD4C4;
  --paper-400: #B8AE9C;
  --ink-900: #1A1714;
  --ink-800: #2B2622;
  --ink-700: #4A4239;
  --ink-500: #6E6557;
  --ink-400: #8E8675;
  --ink-300: #B0A899;
  --clay-900: #5C2E1E;
  --clay-700: #8A3F25;
  --clay-600: #A14A2A;
  --clay-500: #B8593A;
  --clay-200: #ECC9B6;
  --clay-100: #F5DECC;
  --moss-600: #4A6B3E;
  --moss-100: #E4ECDA;
  --slate-700: #3A4754;
  --slate-100: #DDE4EA;
  --font-sans: 'DM Sans', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-mono: 'DM Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --border: 1px solid var(--paper-300);
  --r-sm: 3px;
  --r-md: 6px;
  --shadow-1: 0 1px 0 rgba(26,23,20,.04), 0 1px 2px rgba(26,23,20,.04);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-900);
  background: var(--paper-50);
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "ss01", "cv11";
}

body { margin: 0; padding: 0; }

/* ── Layout ── */
.site-header {
  border-bottom: var(--border);
  background: var(--paper-100);
  padding: 0 2rem;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-700);
  letter-spacing: 0.02em;
  text-decoration: none;
}
.brand::before {
  content: "";
  width: 20px; height: 20px;
  background-image: url("data:image/svg+xml;utf8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22currentColor%22%3E%3Cpath%20d%3D%22M4.6%206.2h10.6a1%201%200%200%201%201%201v.05l4.3%201.3a.55.55%200%200%201%200%201.05l-4.3%201.3v.05a1%201%200%200%201-1%201h-1.7c-.45%201.9-1.7%203.05-3.6%203.45V19.8H6.3a1%201%200%200%201-1-1l-1.55-9.1a1.4%201.4%200%200%201-.05-.4%202%202%200%200%201%20.9-3.1Z%22%2F%3E%3Cpath%20d%3D%22M5.2%2018.6h13.2a1%201%200%200%201%201%201v.4a1%201%200%200%201-1%201H5.2a1%201%200%200%201-1-1v-.4a1%201%200%200%201%201-1Z%22%2F%3E%3C%2Fsvg%3E");
  background-size: contain; background-repeat: no-repeat;
  color: var(--clay-600);
  display: block; flex-shrink: 0;
}
.brand-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-400);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.site-main {
  max-width: 760px;
  margin: 0 auto;
  padding: 3rem 1.5rem 6rem;
}

.site-footer {
  border-top: var(--border);
  padding: 1.5rem 2rem;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-400);
  text-align: center;
}

/* ── Index page ── */
.index-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-400);
  margin-bottom: 0.5rem;
}

.index-title {
  font-size: 28px;
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--ink-900);
  margin: 0 0 0.25rem;
}

.index-desc {
  font-size: 15px;
  color: var(--ink-500);
  margin: 0 0 3rem;
}

.post-list { list-style: none; margin: 0; padding: 0; }

.post-item {
  display: flex;
  gap: 1.5rem;
  padding: 1.25rem 0;
  border-bottom: var(--border);
  align-items: flex-start;
}
.post-item:first-child { border-top: var(--border); }

.post-date {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-400);
  white-space: nowrap;
  padding-top: 4px;
  min-width: 80px;
}

.post-info { flex: 1; }

.post-title {
  font-size: 16px;
  font-weight: 500;
  color: var(--ink-900);
  text-decoration: none;
  display: block;
  margin-bottom: 4px;
}
.post-title:hover { color: var(--clay-600); }

.post-summary {
  font-size: 14px;
  color: var(--ink-500);
  margin: 0;
}

.post-tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: var(--r-sm);
  background: var(--paper-200);
  color: var(--ink-500);
  margin-top: 6px;
  margin-right: 4px;
}
.post-tag.slice { background: var(--clay-100); color: var(--clay-700); }

/* ── Single post ── */
.post-header { margin-bottom: 2.5rem; }

.post-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-400);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.post-meta a { color: var(--ink-400); text-decoration: none; }
.post-meta a:hover { color: var(--clay-600); }
.post-meta-sep { color: var(--paper-300); }

.post-h1 {
  font-size: 30px;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0 0 0.5rem;
}

.post-lead {
  font-size: 16px;
  color: var(--ink-500);
  margin: 0;
  line-height: 1.5;
}

/* ── Post content typography ── */
.post-content { color: var(--ink-800); }

.post-content h2 {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 2.5rem 0 0.75rem;
  color: var(--ink-900);
}

.post-content h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 1.75rem 0 0.5rem;
  color: var(--ink-900);
}

.post-content p { margin: 0 0 1.25rem; }

.post-content a { color: var(--clay-700); text-decoration: underline; text-decoration-color: var(--clay-200); }

.post-content ul, .post-content ol {
  padding-left: 1.5rem;
  margin: 0 0 1.25rem;
}
.post-content li { margin-bottom: 0.35rem; }

.post-content code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--paper-200);
  padding: 1px 5px;
  border-radius: var(--r-sm);
  color: var(--clay-700);
}

.post-content pre {
  background: var(--ink-900);
  color: var(--paper-50);
  border-radius: var(--r-md);
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  margin: 0 0 1.5rem;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
}
.post-content pre code { background: none; padding: 0; color: inherit; font-size: inherit; }
.post-content pre.mermaid { background: var(--paper-100); color: var(--ink-900); padding: 1.5rem; }

.post-content blockquote {
  border-left: 3px solid var(--clay-200);
  margin: 0 0 1.25rem;
  padding: 0.25rem 0 0.25rem 1.25rem;
  color: var(--ink-500);
  font-style: italic;
}

.post-content hr {
  border: 0;
  border-top: var(--border);
  margin: 2rem 0;
}

/* ── Screenshots ── */
.post-content img {
  max-width: 100%;
  border: var(--border);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-1);
  display: block;
  margin: 1.5rem 0;
}

.screenshot-caption {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-400);
  text-align: center;
  margin-top: -1rem;
  margin-bottom: 1.5rem;
}

/* ── Mermaid diagrams ── */
.mermaid {
  background: #fff;
  border: var(--border);
  border-radius: var(--r-md);
  padding: 1.5rem;
  margin: 1.5rem 0;
  overflow-x: auto;
  text-align: center;
}

/* ── AC checklist ── */
.ac-list {
  background: var(--paper-100);
  border: var(--border);
  border-radius: var(--r-md);
  padding: 1rem 1.25rem 1rem 2.5rem;
  margin: 1.5rem 0;
}
.ac-list li { margin-bottom: 0.5rem; font-size: 14px; }
.ac-list li::marker { color: var(--moss-600); content: "✓  "; }

/* ── Back link ── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-500);
  text-decoration: none;
  margin-bottom: 2rem;
}
.back-link:hover { color: var(--clay-600); }

/* ── Diagram lightbox ── */
.diagram-wrap {
  position: relative;
}
.diagram-expand-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-400);
  background: var(--paper-100);
  border: 1px solid var(--border-color);
  border-radius: var(--r-sm);
  padding: 3px 8px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 150ms ease;
}
.diagram-wrap:hover .diagram-expand-btn { opacity: 1; }

dialog.diagram-modal {
  border: none;
  border-radius: var(--r-md);
  padding: 1.5rem;
  width: 90vw;
  height: 90vh;
  box-sizing: border-box;
  overflow: auto;
  background: var(--paper-50);
  box-shadow: 0 8px 40px rgba(0,0,0,0.18);
}
dialog.diagram-modal::backdrop {
  background: rgba(26, 23, 20, 0.55);
}
#diagram-modal-content {
  width: 100%;
  height: 100%;
}
#diagram-modal-content svg {
  display: block;
  width: 100% !important;
  height: 100% !important;
  max-width: none !important;
}